Im sick of my ipod video and want to return it bassed on the battery only lasts for 4 hours max ... if that . I have taken it in and they have said the battery is fine . Its not fine and im not happy

Can i get my money back no problems if i have the recipt? the problem moght be that .. I purchesed it in California but now im living im New zealand ... Can i still get my money back although i am not returing it to the orignal store ? Its a Apple store here in Nz